Initializes a new instance of the Bitmap class with the specified size, pixel format, and pixel data.
Assembly: System.Drawing (in System.Drawing.dll)
Public Sub New ( _
width As Integer, _
height As Integer, _
stride As Integer, _
format As PixelFormat, _
scan0 As IntPtr _
)public Bitmap(
int width,
int height,
int stride,
PixelFormat format,
IntPtr scan0
)public:
Bitmap(
int width,
int height,
int stride,
PixelFormat format,
IntPtr scan0
)new :
width:int *
height:int *
stride:int *
format:PixelFormat *
scan0:IntPtr -> BitmapParameters
- width
- Type: System
. . :: . Int32
The width, in pixels, of the new Bitmap.
- height
- Type: System
. . :: . Int32
The height, in pixels, of the new Bitmap.
- stride
- Type: System
. . :: . Int32
Integer that specifies the byte offset between the beginning of one scan line and the next. This is usually (but not necessarily) the number of bytes in the pixel format (for example, 2 for 16 bits per pixel) multiplied by the width of the bitmap. The value passed to this parameter must be a multiple of four..
- format
- Type: System.Drawing.Imaging
. . :: . PixelFormat
The pixel format for the new Bitmap. This must specify a value that begins with Format.
- scan0
- Type: System
. . :: . IntPtr
Pointer to an array of bytes that contains the pixel data.
| Exception | Condition |
|---|---|
| ArgumentException | A PixelFormat value is specified whose name does not start with Format. For example, specifying Gdi will cause an ArgumentException, but Format48bppRgb will not. |
The caller is responsible for allocating and freeing the block of memory specified by the scan0 parameter. However, the memory should not be released until the related Bitmap is released.
The following code example shows how to use the Bitmap constructor. This example is designed to be used with Windows Forms and requires a PaintEventArgs parameter, which is a parameter of the Paint event.
Private Sub BitmapConstructorEx(ByVal e As PaintEventArgs)
' Create a bitmap.
Dim bmp As New Bitmap("c:\fakePhoto.jpg")
' Retrieve the bitmap data from the the bitmap.
Dim bmpData As System.Drawing.Imaging.BitmapData = bmp.LockBits(New Rectangle(0, 0, bmp.Width, bmp.Height), _
ImageLockMode.ReadOnly, bmp.PixelFormat)
'Create a new bitmap.
Dim newBitmap As New Bitmap(200, 200, bmpData.Stride, bmp.PixelFormat, bmpData.Scan0)
bmp.UnlockBits(bmpData)
' Draw the new bitmap.
e.Graphics.DrawImage(newBitmap, 10, 10)
End Sub
private void BitmapConstructorEx(PaintEventArgs e)
{
// Create a bitmap.
Bitmap bmp = new Bitmap("c:\\fakePhoto.jpg");
// Retrieve the bitmap data from the the bitmap.
System.Drawing.Imaging.BitmapData bmpData = bmp.LockBits(new Rectangle(0, 0, bmp.Width, bmp.Height),
ImageLockMode.ReadOnly, bmp.PixelFormat);
//Create a new bitmap.
Bitmap newBitmap = new Bitmap(200, 200, bmpData.Stride, bmp.PixelFormat, bmpData.Scan0);
bmp.UnlockBits(bmpData);
// Draw the new bitmap.
e.Graphics.DrawImage(newBitmap, 10, 10);
}
- SecurityPermission
for calling into unmanaged code. Related enumeration: UnmanagedCode
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.